Displaying 20 results from an estimated 71 matches for "lumin".
Did you mean:
umin
2009 Nov 03
1
Stacked barplot: specifying individual bar hue/luminance
...i all,
I'm trying to generate barplots from simple but long (~100000-row) data
files, in which each bar will comprise two stacked 'sub-bars'. All the
upper sub-bars will have the same hue, and all the lower bars will,
likewise, have another uniform hue. However, I wish to specify the
luminance (aka brightness) of each bar (i.e., each whole bar comprising two
sub-bars) separately, and I wish the plot to render without spaces between
successive bars.
I've been trying to get this going in ggplot2. Two problems arise: first,
I'm unable to eliminate the spaces between successiv...
2004 Jun 04
4
YUV question
On Fri, 4 Jun 2004, Makc wrote:
> Here's what you can find in the net on YUV scheme:
Hmm? What prompted this?
> The statement I care to make here, is simply that there ain't neither
> such thing as "luminance", which details "the eye is more sensitive to",
"ain't neither"? Double negative, so I take your statement to mean
that there *is* such a thing as luminance...:)
> nor "chromaticity", which details the eye is less sensitive to. What we
> have here...
2010 May 12
2
Finding different hues for a mosaic plot compatible with grayscale printing
...o I set the h,c, and l values such that the significant, positive
residuals appear different on a grayscale printer from significant
grayscale residuals. The challenge as I see it is that one can only
distinguish the positive and negative residuals with the hue/. Varying
the chroma and the luminance only affect the distinctions between
large and small and significant and non significant. But my positive
and negative residuals are both large (absolutely) and significant,
meaning that they will have the same chroma and luminosity, but
different hues.
I guess the key here is to find...
2008 Jul 07
2
Drawing a colour wheel - bug in hcl?
Hi All,
I'm trying trying to draw a colour wheel (a slice of hcl space) in R.
Running the code below doesn't give me what I expect - there's some
oddly bright colours of the wrong hue around c(0, 0) and I see three
coloured circles (a small magenta, a medium sized yellow and a large
cyan). Am I doing something wrong or is there a bug in the hcl code?
(Also any suggestions for
2010 Nov 04
3
Plotting a grid of directly specified colours
...ly, rather than providing a numerical
matrix and a 1D-colour scale (heatmap, image, levelplots,NeatMap...). I'm
surprised I haven't found anything simple with RSiteSearch,
help.search, net.
I'd like to use this function to encode one variable as "chroma" and a
second as "luminance" (hcl colour space), so that the two variables can be
visualised in a single heatmap (the variable are fold-change and a q-value,
a significance measure). If anyone has any thoughts/warnings to offer re
this idea then I'd love to hear them (it must have been tried before, but
I've...
2017 Sep 28
2
Wiki editing permission request
hi,
having worked into the Storage SIG group to add/maintain ceph-ansible in
the jewel repo and create the new repo for the ceph luminous release, I
would like to update the wiki pages at [1] and [2] with some links and
better instructions
Username: GiulioFidente
1. https://wiki.centos.org/SpecialInterestGroup/Storage
2. https://wiki.centos.org/SpecialInterestGroup/Storage/Ceph
--
Giulio Fidente
GPG KEY: 08D733BA
2013 Feb 18
0
Computing Spectral Slope
...I'm working on image classification and for that I want to use the spectral
slope as a feature for my classifier. For this I would prefer to calculate
this feature using R, so far I've read my image and converted it's RGB
representation into HSL. The spectral slope is computed over the Luminance
component, so at the moment what I have is a NxN matrix of Luminance values.
The following steps would be:
1- Calculating the FFT of the Luminance matrix.
2- Calculating the Power Spectra, which is computed as |FFT|^2.
3- Matching every Power Spectra value to its Spatial frequency and doing a...
2004 Nov 03
2
Suggested color schemes for points, not regions?
I have seen a couple of posts about color schemes like those at the
ColorBrewer site. Most recently:
http://geography.uoregon.edu/datagraphics/color_scales.htm
These color schemes can work very well for regions (bars, polygons,
images, etc.) but are not very suitable for points and/or lines.
Is anyone aware of research/suggestions for a color scheme to use for
scatter plots? I've looked at
2008 Feb 25
3
More examples?
Hello,
I want to make a program to extract frame from a theora movie as
images. I tried with the decoding example located at theora web site
(dump_video.c. I use it to extract a frame as yuv image but when I try
to convert it to ppm with yuvtoppm program i obtain a strange image
( see http://poux.be/tmp/file.ppm ). I think it's a problem with the
byte order for yuv, but don't I don't
2013 Jun 12
2
grDevices::convertColor XYZ space is it really xyY?
grDevices::convertColor has arguments 'from' and 'to' which can take on value 'XYZ'. Can someone confirm that 'XYZ' is the same as the CIE chromaticity coordinates that are also sometimes refered to as 'xyY' in the literature? Or are these the CIE tristimulus values? It looks to me like the first case is true, but I would appreciate hearing from one of
2017 Oct 02
1
Wiki editing permission request
...28, 2017 at 7:17 AM, Giulio Fidente
> <gfidente at fedoraproject.org <mailto:gfidente at fedoraproject.org>> wrote:
>
> hi,
>
> having worked into the Storage SIG group to add/maintain ceph-ansible in
> the jewel repo and create the new repo for the ceph luminous release, I
> would like to update the wiki pages at [1] and [2] with some links and
> better instructions
>
> Username: GiulioFidente
>
> 1. https://wiki.centos.org/SpecialInterestGroup/Storage
> <https://wiki.centos.org/SpecialInterestGroup/Storage&...
2008 Oct 06
1
Color of title in legend()
Dear R-helpers,
This produces a red title. How do I make it black, without making the
labels black?
legend(title = 'Channel Integration', 0.7, 0.3,
c('loudness','luminance'), col = c('red', 'blue'), text.col = c('red',
'blue'), lty = 1, xjust = 0.5, bty = 'n')
_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
USPS: P.O.Box 400400 Charlottesville, VA 22904-44...
2010 Mar 20
1
Voicemail, Asterisk and Grandstream BT200
...ail UserID", under the "ACCOUNT" tab, I put *100 that is the
extension in which my Asterisk answer the voicemail service and if then
I press MESSAGE button, the telephone communicates with Asterisk and,
after to introduce the password, it indicates to me that I have
messages. But the luminous indicator does not work.
It is necessary to configure something special for this? It can be that
it doesn't work because there is to introduce one password previously?
Thanks in advance for your reply.
Regards,
Daniel
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
iEYEA...
2007 May 14
1
Loreal Volume Shocking Mascara Sample
http://www.loreal.free-mascara.com
L''OREAL Volume Shocking Mascara is a 2-in-1 mascara with a base coat at
one end of the mascara wand and a top coat at the other. Bring on
super-lush, luminous lashes in just 2 easy steps!
--
Posted via http://www.ruby-forum.com/.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk-/...
2012 Aug 14
3
self-starter functions for y = a + b * c^x
Hi
there are some predefined self-start functions, like SSmicmen, SSbiexp,
SSasymp, SSasympOff, SSasympOrig, SSgompertz, SSflp, SSlogis, SSweibull,
Quadratic, Qubic, SSexp (nlrwr)
Btw, do you know graphic examples for this functions?
The SSexpDecay (exponential decay) for y = (y0 - plateau)*exp(-k*x) +
plateau from
2005 May 24
1
image() and non-well-ordered colours
...ariables.
Indexing by one variable is easy:
library(colorspace)
x <- seq(from=0, to=1,len=30)
z <- outer(x,1i*x,"+")
image(Re(z),col=hcl(seq(from=0,to=100,len=15),c=100))
OK, so far so good. Now, I want the colour to be a more complicated
function
of z, in which both the hue and luminance change (thus the colours
cannot
be ordered):
f <- function(z){hcl(h=100*Re(z),l=100*Im(z))}
I want to draw z in terms of the colour defined by f():
image(z,col=f)
image(f(z))
but these don't work as intended. How do I use image() to get what I
want?
I can get close using plot():...
2014 Mar 31
0
[PATCH] Fix encoding issues, add news and artists
..., vir?gom (world music)</li>
- <li> Ti?sto - In Search of Sunrise 7: Asia (dance)</li>
+ <li> Szakcsi - Virágom, virágom (world music)</li>
+ <li> Tiësto - In Search of Sunrise 7: Asia (dance)</li>
<li> The Lumineers - The Lumineers (folk)</li>
<li> Various - Jeff Waynes Musical Version of The War of the Worlds (radio drama-ish, rock, orchestral)</li>
<li> Waylon Jennings - Honky Tonk Heroes (country)</li>
<li> Various - Latin Village, CD 1: Salsa (salsa)...
2010 Apr 22
6
simple question
Hi
how can I find, in a vector of characters, which is the most frequent one?
Thanks
Gabriele Zoppoli, MD
Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of Genova, Genova, Italy
Guest Researcher, LMP, NCI, NIH, Bethesda MD
Work: 301-451-8575
Mobile: 301-204-5642
Email: zoppolig at mail.nih.gov
2010 Jul 07
4
Gray level mosaic plot with shading_Friendly
Suppose we start with
data("Titanic")
mosaic(Titanic, shade = TRUE)
How do I combine the dashed box contours of shading_Friendly to indicate negative residuals, with three levels of gray: dark for abs(Pearson Resid) > 4, lighter for 4 > abs(Pearson Resid) > 2, and lightest for bs(Pearson Resid) < 2 ?
Thanks,
Michael
______________________________________________
2007 May 21
3
Selecting complementary colours
Dear r-helpers,
I wonder whether, given the "#rrggbb" representation of a colour, there is a
simple way to select the complementary colour, also expressed as a "#rrggbb"
string.
Any suggestions would be appreciated.
John
--------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604